Marcus who had been somewhat lost in thought, was completely taken by surprise when a wooden broomstick suddenly appeared between his legs, and then, a split-second later, he was seized by the hands of someone behind him and lifted by said broomstick into the sky. He was incredibly relieved when he heard Tonks' voice, but held on for dear life, nevertheless. He had been up on a broom with her before, but it would be untrue to say he had become accustomed to it.
"Tonks! Good Lord! You scared me! Don't do what? Where are we going? How are you? Is something on your mind?"
Marcus's mind was spinning at the range of possible explanations for this encounter, and once he engaged his voice, it joined in, spitting out a question for every possibility he had considered, and a few he had not.